80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
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/* timing.h
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Copyright 2003 Free Software Foundation, Inc.
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This file is part of MPIRbench.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Return user CPU time measured in milliseconds. */
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#ifndef _TIMING_H
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#define _TIMING_H
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#if !defined (__sun) && (defined (USG) \
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|| defined (__SVR4) || defined (_UNICOS) || defined (__hpux))
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#include <time.h>
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inline int
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cputime()
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{
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return (int) ((double) clock () * 1000 / CLOCKS_PER_SEC);
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}
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#else
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#ifdef _MSC_VER
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#include "getrusage.h"
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#define inline __inline
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#else
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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inline int
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cputime ()
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{
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struct rusage rus;
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getrusage (0, &rus);
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return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
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}
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#endif
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#define TIME(t,func) \
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do { long int __t0, __times, __t, __tmp; \
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__times = 1; \
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{func;} \
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do \
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{ \
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__times <<= 1; \
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__t0 = cputime (); \
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for (__t = 0; __t < __times; __t++) \
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{func;} \
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__tmp = cputime () - __t0; \
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} \
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while (__tmp < 250); \
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(t) = (double) __tmp / __times; \
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} while (0)
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#endif /* _TIMING_H */
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